Magnaflux ETT User manual

Operating Manual
ETT Demagnetising Tunnel
ETT 150/250/350/450/550

1. IMPORTANT SAFETY INFORMATION
1.1 INSTRUCTIONS FOR SAFE USE
The operational safety of the ETT demagnetising tunnel is only guaranteed when
it is used as intended. The ETT is exclusively designed for demagnetising compo-
nents made of ferromagnetic material with a magnetic eect >100 µ.
Improper use may lead to damage or injury. The ETT must NOT be used
• in explosive environments
• for mechanical or thermal processing of workpieces.
Responsibilities of the operator
The operator is solely responsible for the consequences of improper use and
actions not described in this manual. The manufacturer - Magnaflux GmbH - assumes
no liability for any resulting damage. In the case of improper use, all warranty
claims are void.
The operator is obligated to ensure that the device is operated only by persons
who:
• are familiar with the basic regulations concerning industrial safety and
prevention of accidents.
• have been fully trained in the operation of the device. Personnel undergoing
training must be supervised while using the ETT.
• have read and understood this manual.
Responsibilities of other personnel
Only authorised personnel may carry out:
• transportation of the unit
• installation and commissioning
• connection of the power supply
• maintenance and repair work
All persons who are commissioned to work on the device are obligated to:
• observe the basic regulations regarding industrial safety and prevention of
accidents;
• read and strictly follow this operation manual before starting work.
Please contact Magnaflux GmbH with any questions regarding the use of this machine.
CONTENTS
1 Important safety information 1
1.1 Instructions for safe use 1
1.2 Applicable warning signs 2
1.3 Exposure to magnetic fields 2
2 Technical data 3
2.1 Dimensions 3
2.2 Electrical 3
2.3 Field strength 3
2.4 Environmental conditions 3
2.5 Size of workpieces 3
3 Operation 4
3.1 Operating elements 4
3.2 Function 4
3.3 Installation 5
3.4 Operating the ETT 5
3.5 Measuring field strength 6
3.6 Maintenance 6
4 Transportation 7
4.1 Preparing for transport 7
4.2 Transportation in original packaging 7
4.3 Transportation by crane 7
5 Decommissioning and disposal 8
5.1 Decommissioning 8
5.2 Disposal 8
- EC/EU Declaration of Conformity 8
This operation manual provides important advice for the safe and eective
handling of the device. The manual must be kept at the place of work and be
accessible to operators and maintenance personnel at all times.
1

1.2 APPLICABLE WARNING SIGNS
MAGNETIC FIELD STRENGTH
High magnetic field strengths during magnetising can lead to
health problems and negative eects on implants.
• Follow all general and specific regulations for the prevention
of accidents.
• Observe safety distances during magnetising.
RISK OF INJURY FROM HEAVY OBJECTS
Heavy objects may injure hands:
• Do not grip between objects and magnetising coil when
loading and unloading.
• Wear protective gloves.
SKIN IRRITATION THROUGH MATERIALS
Components in the chemical materials may lead to skin irrita-
tion or other health risks.
Always follow the safety instructions in the manufacturer’s
Safety Data Sheet when handling chemical materials.
HIGH ELECTRIC VOLTAGES CAN CAUSE LETHAL ELECTRIC
SHOCK AND BURNS
Work on the electrics of this unit must only be carried out:
• in compliance with applicable standards at the installation site;
• only by a qualified electrician.
IN AN EMERGENCY:
Immediately disconnect the ETT from the power supply.
The mains switch serves as a mains isolation.
• OFF position is marked ‘0’.
• ON position is marked ‘1’.
With the switch in the OFF position, the machine is isolated from the power supply
and the switch can be secured with a padlock.
1.3 EXPOSURE TO MAGNETIC FIELDS
DANGER TO LIFE FOR PERSONS WITH CARDIAC PACEMAKERS
Magnetic fields can interfere with cardiac pacemakers, insulin
pumps and other implanted devices.
DO NOT USE THIS EQUIPMENT:
• if you have a pacemaker, insulin pump or other implanted device.
• if you are pregnant.
• if you are under 16 years of age.
The grey shaded zone in this diagram
(right) shows the area of increased expo-
sure to magnetic fields. The operator must
measure and mark out the safety distance
in their own workplace, and maintain that
distance from the magnetising device
during operation:
• peoplewithoutbody-implanteddevices:
0.5 m / 20”
• people with body-implanted devices
(e.g. pacemakers): 5 m / 16’ 5”
In addition, the operator must ensure that
• only authorised and trained personnel are working in these areas
• the permissible values for short-term and partial body exposure are not
exceeded
• personal protective equipment (PPE) is used to prevent over-exposure.
Important: magnetic fields can penetrate through walls!
The specified safety distance results from the limits set out in the accident
prevention regulations BGV B11 as of June 2001 of the International Directive
for the Limitation of Exposure by Temporary Change in Electrical, Magnetic and
Electromagnetic Fields (ICNIRP), 1998.
According to Accident Prevention Regulation BGV B11, the ETT machine is assigned
the magnetic exposure group 1. The exposure group 1 covers areas with controlled
access, like work places.
S = area of increased exposure
2

2. TECHNICAL DATA
2.1 DIMENSIONS
Model Length (mm) Width (mm) Height (mm) Weight (kg)
ETT 150 325 260 260 24
ETT 250 325 390 390 46
ETT 350 325 480 475 75
ETT 450 325 580 577 90
ETT 550 325 680 695 100
All measurements and weights are approximate.
2.2 ELECTRICAL
IEC Protection Class II (double insulated)
2.4 ENVIRONMENTAL CONDITIONS
Temperature range during use 5oC to 45oC
Temperature range for storage 5oC to 55oC
Humidity during use and storage max. 90% relative humidity without dew
2.5 SIZE OF WORKPIECES
The ETT is exclusively designed for demagnetising workpieces made of ferro-
magnetic material with a magnetic eect >100 µ and maximum sizes as below
Model Maximum width (mm) Maximum height (mm)
ETT 150 145 145
ETT 250 245 245
ETT 350 345 345
ETT 450 445 445
ETT 550 545 545
Operation voltage:
AC 230 V, 50 Hz
Model Power consumption
ETT 150 0.5 kVA
ETT 250 1.2 kVA
ETT 350 2.2 kVA
ETT 450 3.1 kVA
ETT 550 3.6 kVA
Operation voltage:
AC 400 V, 50 Hz, N, PE
Model Power consumption
ETT 150 0.7 kVA
ETT 250 1.8 kVA
ETT 350 3.4 kVA
ETT 450 4.5 kVA
ETT 550 4.7 kVA
3
Standard 230 V, 50 HZ
Model Coil magnetising*
ETT 150 11 kA/m
ETT 250 9 kA/m
ETT 350 8 kA/m
ETT 450 6.5 kA/m
ETT 550 5.4 kA/m
Reinforced 400 V, 50 Hz
Model Coil magnetising*
ETT 150 13.5 kA/m
ETT 250 10 kA/m
ETT 350 10 kA/m
ETT 450 8 kA/m
ETT 550 6.2 kA/m
2.3 FIELD STRENGTH
* Tolerance within ±10%

3. OPERATION
3.1 OPERATING ELEMENTS
3.2 FUNCTION
If your workpiece has been magnetised with an AC current, it must be demagne-
tised using an AC current. For eective demagnetisation:
• there must be a field of alternating polarity and
• the field strength must continuously fall to zero.
The reduction of the field strength in the workpiece can happen:
• electrically, by reducing of magnetising current
• mechanically, through the continuous movement of the magnetic field.
Within the ETT demagnetisation tunnel, move the workpiece (either manually or via
a conveyor system) in the direction of the coil axis, into the magnetic field and then
out of the magnetic field of the coil.
The depth of the 50 Hz alternating field is approx. 2 mm. For a greater depth, we
can supply low-frequency generators with 16 2/3 Hz for all our ETT demagnetisa-
tion tunnels.
Main components:
1. Magnetising coil
2. Main switch
3. Connection cable and plug
There is an identification plate located near the main switch, where you will find im-
portant information regarding the device, the power supply and the manufacturer.
Your ETT device also displays the following symbols:
CE marking - indicates conformity with EU guidelines applicable
to the product.
Danger from magnetic fields; observe safety distances.
Use of this device by people with pacemakers and other body
implants is prohibited!
All direction and location
details in this manual refer to
the main working area of the
machine:
Behind
RightFront
Left
Field strength during demagnetisation
4